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Finding the Fourth Proportional to 326,020.30, 489,030.45 and 259,098.10

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Solution

The fourth proportional to 326,020.30, 489,030.45 and 259,098.10 is: 388,647.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,020.30 : 489,030.45 = 259,098.10 : x
  2. Step 2: Convert to fraction form
    326,020.30/489,030.45 = 259,098.10/x
  3. Step 3: Cross multiply
    326,020.30x = 489,030.45 × 259,098.10
  4. Step 4: Simplify right side
    326,020.30x = 126,706,860,437.15
  5. Step 5: Solve for x
    x = 126,706,860,437.15/326,020.30
  6. Step 6: Final answer
    x = 388,647.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.